Tonight’s episode SHOULD kill off all unanswered questions regarding the “rules” and how Jacob and MIB got themselves caught up in this whole mess. Hopefully without more slap-together storytelling in the kill-a-character-a-minute style I’ve already complained about.
I'm sorry to say that I don't think this episode truly succeeded. But I DO believe now more than ever that the final shot of the last episode will be... or at least begin with... a closeup of Jack's eyes.